Breadcrumb Home > Thesaurus > B Synonyms of biretta Find synonyms for: Noun1. biretta, berretta, birretta, capusage: a stiff cap with ridges across the crown; worn by Roman Catholic clergyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of biretta (Dictionary) ✖ Related Content Daily Word Quiz: rocrustean Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language